Article Impact Level: HIGH Data Quality: STRONG Summary of Atherosclerosis, https://doi.org/10.1016/j.atherosclerosis.2026.120724 Dr. Tsunehiro Miyakoshi et al.
Points
- Conventional measures of high-density lipoprotein cholesterol often fail to reflect actual biological function or show how effectively particles clear lipids from vulnerable arterial walls.
- Investigators analyzed serum samples from 61 cardiac catheterization patients using the newly developed cell-free immobilized liposome-bound gel beads method to measure cholesterol efflux capacity.
- Intracoronary imaging via optical coherence tomography revealed that patients with low cholesterol efflux values harbored significantly larger and higher-risk lipid-rich arterial plaques.
- Higher cholesterol removal capacities tracked with specific structural high-density lipoprotein particle subclasses that uniquely express apolipoprotein E on their outer surface.
- This practical cell-free testing method overcomes the complexity of traditional assays, providing clinical teams with a scalable tool to identify vulnerable cardiovascular lesions non-invasively.
Summary
The clinical utility of the immobilized liposome-bound gel beads (ILG) method, a novel cell-free assay designed to quantify cholesterol efflux capacity (CEC). Cholesterol efflux capacity serves as a robust functional biomarker for atherosclerotic cardiovascular disease, reflecting the efficiency with which high-density lipoprotein (HDL) particles extract excess cholesterol from peripheral arterial walls. While conventional, cell-based CEC assays offer strong prognostic insight into macrovascular risk, their widespread clinical implementation has been hindered by complex, labor-intensive laboratory protocols. To address this operational barrier, investigators sought to validate whether this simplified, high-accuracy biochemical technique could reliably identify patients harboring high-risk coronary lesions.
The research team analyzed serum samples from 61 patients who had previously undergone diagnostic cardiac catheterization and comprehensive intracoronary imaging. The calculated ILG-derived CEC values were systematically correlated with microstructural plaque morphology visualized via high-resolution optical coherence tomography (OCT). The imaging data demonstrated that patients presenting with high-risk, large lipid-rich plaques exhibited significantly depressed CEC values compared to patients with stable, non-large lipid-rich atheromas. Additionally, higher functional cholesterol removal capacity tracked closely with specific HDL subclasses containing apolipoprotein E. These findings suggest that impaired reverse cholesterol transport directly parallels the development of unstable, rupture-prone coronary lesions.
The results confirm that the cell-free ILG assay effectively identifies compromised HDL functionality, bypassing the logistical complexities of standard cell culture models. By capturing the hidden risk of plaque vulnerability through a straightforward blood assessment, this methodology helps overcome traditional diagnostic barriers associated with invasive catheterization. The data demonstrate that low CEC functions as an independent marker of plaque instability, offering a scalable tool to optimize non-invasive risk stratification and guide primary preventive care. While multi-center prospective trials are needed to clarify precise relative risk hazard ratios for acute coronary events, this technique establishes a practical approach for routine monitoring of vascular health.
Link to the article: https://www.atherosclerosis-journal.com/article/S0021-9150(26)00090-0/fulltext
References
Miyakoshi, T., Horiuchi, Y., Araki, M., Yonetsu, T., Watanabe, M., Kameda, T., Yoshimoto, A., Ichimura, N., Tohda, S., Tozuka, M., Sasano, T., & Ohkawa, R. (2026). Relationship of atherosclerotic lesion by optical coherence tomography with cholesterol efflux capacity by immobilized liposome-bound gel beads method. Atherosclerosis, 120724. https://doi.org/10.1016/j.atherosclerosis.2026.120724
